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Which of the following statements is correct about the equilibrium constant?

1. Its value increases by increase in temperature
2. Its value decreases by decrease in temperature
3. Its value may increase or decrease with increase in temperature
4. Its value is constant at all temperature

Correct answer: Its value may increase or decrease with increase in temperature

Solution

The equilibrium constant depends on temperature, and the direction of change is not universal. For endothermic reactions it increases with temperature, while for exothermic reactions it decreases, so it may increase or decrease depending on the reaction.

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